Scandinavian Nature , Jan van der Veen has a very artistic approach to his nature photography that appeals to me.
Photo Aves Nature , Stefan Oscarsson is among one of the best Swedish bird photographers in my mind.
ImageOrama , Tammy Begrström is a wonderfull macro and nature photographer. Her ladybug macro is very inspirational.
Jim Zipp Photography , Jim Zipp is a very experienced North American nature photographer.
Fotosidan.se , Fotosidan is a big Swedish photography site that covers all types of photography. Both beginners and proffessionals gain knowledge from this very big community.
Naturescapes.net , Naturescapes.net is a growing North American online community for nature photographers. This is the site community you want to join when you get serious about your photography. Naturescapes also has a store where you can purchase equipment to cover your most extreme photography needs.
Fredmiranda.com
, Fredmiranda is a big online community where photography news and reviews often surface.
There is also a big forum for all types of photography.